Engine Specific Info and Questions > mTDI Mechanical TDI Conversions
mTDI / TDI-M Injection Pump FAQ
superspringer:
Sorry to ask what is probably a really REALLY obvious question - but what are the actual advantages in converting from electronic control to mechanical? Is it purely for ease of adjustment or is there some other reason?
jtanguay:
--- Quote from: "Tintin" ---No problem with 17mm main shaft, the fragile part of an axis is the place where the came plate is drived, 17 or 20mm are identical at this point.
I built several 17mm M-TDI pump without problem, one of them have over 100000KM on it, with 17mm I guess that the bushing will use more quickly.
Not to take only the head in consideration, a 14mm head with IDI came plate or 10mm with TDI came plate have exactly the same potential, thus one or other cause the same stress on the shaft.
--- End quote ---
thats good news because for my mTDI pump i want a 11mm head :wink: and i'm 99% sure its 17mm.
Tintin:
I forgot to specify, I only built 10mm head + TDI cam-plate with 17mm main shaft.
I already installed a 11mm head + TDI cam-plate on a 17mm shaft, but for only 1500-2000KM.
--- Quote from: "jtanguay" ---
--- Quote from: "Tintin" ---No problem with 17mm main shaft, the fragile part of an axis is the place where the came plate is drived, 17 or 20mm are identical at this point.
I built several 17mm M-TDI pump without problem, one of them have over 100000KM on it, with 17mm I guess that the bushing will use more quickly.
Not to take only the head in consideration, a 14mm head with IDI came plate or 10mm with TDI came plate have exactly the same potential, thus one or other cause the same stress on the shaft.
--- End quote ---
thats good news because for my mTDI pump i want a 11mm head :wink: and i'm 99% sure its 17mm.
--- End quote ---
32 VALVES:
I just got done doing my swap on my caddy 1z motor with a mechanical pump. I dont know what its off, but it bolted right up to the pump bracket that had the tdi pump. If I get some part #'s someone can tell me what I got right. the power is not impressing but it was faster than the 1.6idi. its running off wastegate spring pressure 10psi. Im new to this stuff so I need some to hold my hand in fattening up the fuel on this thing...
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vwsnaps:
--- Quote from: "superspringer" ---Sorry to ask what is probably a really REALLY obvious question - but what are the actual advantages in converting from electronic control to mechanical? Is it purely for ease of adjustment or is there some other reason?
--- End quote ---
I had the same question.
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